Efficient matrix multiplication methods to implement a near-optimum channel shortening method for discrete multitone transceivers

Author

Wu, Jeffrey ; Arslan, Güner ; Evans, Brian L.

Author_Institution

Embedded Signal Process. Lab., Texas Univ., Austin, TX, USA

Volume

1

fYear

2000

fDate

Oct. 29 2000-Nov. 1 2000

Firstpage

152

Abstract

The minimum intersymbol interference (min-ISI) method yields time-domain equalizer (TEQ) designs for discrete multitone (DMT) modulation transceivers that are close to channel capacity. For eight standard ADSL channels, the min-ISI design method reaches within 1% of the matched filter bound at the TEQ output. However, the min-ISI method relies several computationally expensive matrix multiplications. We develop low-complexity algorithms for these multiplications to allow for real-time implementation of the min-ISI method on programmable digital signal processors.

Keywords

channel capacity; computational complexity; digital subscriber lines; equalisers; intersymbol interference; matrix multiplication; modulation; time-domain synthesis; transceivers; TEQ output; channel capacity; discrete multitone modulation; discrete multitone transceivers; efficient matrix multiplication methods; low-complexity algorithms; matched filter bound; min-ISI method; minimum intersymbol interference; near-optimum channel shortening method; programmable digital signal processors; real-time implementation; standard ADSL channels; time-domain equalizer; Channel capacity; Design methodology; Digital signal processors; Equalizers; Intersymbol interference; Matched filters; OFDM modulation; Signal processing algorithms; Time domain analysis; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-6514-3

Type

conf

DOI

10.1109/ACSSC.2000.910934

Filename

910934